The four American troops killed during renewed fighting between the U.S. and Iran in recent weeks are no longer listed as part of the Iran war death toll in the Pentagon’s official casualty count but have been placed in a new, separate category.

It is raising questions about properly counting the impact to U.S. service members as the Trump administration has escalated strikes on Iran in a bid to reopen the Strait of Hormuz, while providing little indication of how it intends to wind down a conflict that is unpopular with many Americans.

The Defense Casualty Analysis System, which Pentagon officials have repeatedly pointed to as the definitive source on the numbers of dead and wounded from the conflict, removed the four fallen soldiers as well as dozens of wounded troops from its Iran war tally last week.

On Sunday, a new category called Overseas Operations emerged on the system’s website, listing the four Army deaths by name as well as 207 wounded. It was unclear if all of the wounded were injured in the Iran conflict.

U.S. Central Command, which oversees operations in the Middle East, referred questions to the Pentagon, which did not immediately respond.

As late as Tuesday, the website was reporting the war’s official toll as 18 killed and 482 wounded.

Since then, the U.S. and Iran have exchanged regular fire in a bid to control the crucial waterway, with the U.S. hitting Iranian targets nightly for nearly two weeks and Tehran responding with attacks on neighboring countries hosting American forces. There have been no strikes for two nights as mediators push for diplomacy.